Alternator Replacement

SARAHMSI

MEMBER
2005 GMC ENVOY
4 CYL
2WD
AUTOMATIC
202,000 MILES

How do I find the amps of my alternator on a 2005 GMC Envoy. I need to change the alternator

Monday, June 27th, 2011 AT 4:37 PM

6 Replies

JDL

MECHANIC
16,098 POSTS

Here is a guide that will walk you through the steps with instructions and diagrams for the job on your car below.

https://www.2carpros.com/articles/how-to-replace-an-alternator

Alternator - 19151920 - $461.98 and can get a rebuilt one from Amazon for 126.00 AC delco

https://www.amazon.com/gp/product/B002QVHN7O/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=2carprcom-20&creative=9325&linkCode=as2&creativeASIN=B002QVHN7O&linkId=89cb8cdba7ce7fcd84ba105449e2d9c3

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

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Monday, June 27th, 2011 AT 8:33 PM

KACHMEZ28

MEMBER
1 POST
2003 GMC ENVOY

Thanks! I got the part and BAM all set, I love this site.

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Monday, April 29th, 2019 AT 2:37 PM (Merged)

CFS3

MEMBER
1 POST
2004 GMC ENVOY
6 CYL
4WD
AUTOMATIC
60,000 MILES

How to change an alternator in envoy?

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Monday, April 29th, 2019 AT 2:37 PM (Merged)

JACOBANDNICKOLAS

MECHANIC
109,700 POSTS

Hi:

Here is a guide to help walk you through the steps with diagrams below to show you your car

https://www.2carpros.com/articles/how-to-replace-an-alternator

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Images (Click to make bigger)

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Monday, April 29th, 2019 AT 2:37 PM (Merged)

FINEWINE14U

MEMBER
1 POST
2002 GMC ENVOY
6 CYL
4WD
AUTOMATIC
175,000 MILES

My Envoy is making a high pitched whine sound when the gas is stepped on. One shop said it is the alternator making the sound. Another said it could be the alternator failing because the battery is failing. The battery charge indicator on the dash seems to hunt somewhere between the normal 1/2 point, and often goes down to the 1/4th level. With the lights off, heater off, the charge indicates normal, but quickly but slightly falls when I get off the gas. With the lights on, or heater on high, the charge indicator will not raise to the normal level no matter how much gas I give it. I have never heard an alternator make noise. Do they? I have replaced the battery once in this high mileage vehicle, which indicated five years ago it was good for 3 years. I have had the belts replaced, the pulleys replaced, but I have never had the alternator replaced. Alternator, battery, or both? Or Not Either?